6. Open Putty on your desktop and paste the IP Address from Azure to the "Host or IP address" field. Then click "Open" if you want to save your settings then assign the connection a name in the "Saved Session" field

6. You will be prompted to trust the SSH Key, say "Yes", then you will be prompted for the user's password. If you haven't assigned a username in the "Connection" section of Putty you will prompted for the username as well.

7. Type in your password and you will connected to the CentOS instance in Azure.